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<head>
    <meta charset="UTF-8">
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    <title>Document</title>
</head>
<body>
    <!-- <form action="https://www.baidu.com">
        <input type="text">
        <br>
        <input type="password">
        <br>
        <input type="radio" name="gender" checked="checked" id="male"><label for="male">男</label>
        <br>
        <input type="radio" name="gender" checked="checked" id="female"><label for="female">女</label>
        <br>
        <input type="text" name="key">
        <input type="submit">
        <input type="file">
    </form> -->
    <!-- <form action="https://edu.bitejiuyeke.com/index">
        课程:<input type="text" name="course">
        <input type="submit">
        <input type="reset">
        <input type="file">
    </form> -->
    <!-- <form action="https://bitejiuyeke.com/info">
        <select name="num">
            <option value="zero">0</option>
            <option value="first">1</option>
            <option value="second">2</option>
            <option value="third">3</option>
        </select>
        <input type="submit">
    </form> -->
    <!-- <form>
        <textarea name="" id="" cols="30" rows="10"></textarea>
    </form> -->
    <span>
        <span>
            <span>ceshi</span>
            <div>测试</div>
        </span>
    </span>
</body>
</html>